Ultrasound Diagnosis Of Breast Lesions And Pathological Control Study

Purpose: To (a) determine the histologic feature, size , and the stage of nonpalpable breast cancers detected on ultrasound(US); (b)determine the sonographic features of nonpalpable breast cancers detected with US; (c) evaluated the clinical utility of BI-RADS final assessment to breast US by auditing data on breast US; (d)evaluated the clinical usefulness of US for breast cancer detection.Material and methods: Between Jan 1998 and Nov 2003, 295 nonpalpable breast lesions detected on US in 252 asymtomatic women were underwent US-guided localization preoperatively. Each lesion was classified according to BI-RADS final assessment category system (category 2-5). Sonographic features were divided into malignant and benign findings. Malignant findings included taller-than-wide shape, irregular shape, microlobulation, spiculated margin, halo, posterior attenuation, microcalcification, ductal distortion, irregular vessels, hypervascularity, penetrating vessels. Benign findings include oval or lobular shape, circumscribed margin or thin capsule, avascularity or hypovascularity, regular vessels. A nodule with one or more malignant...